cfme: Improper access control in dRuby allows local users to execute arbitrary commands as root
Published Jul 24, 2018
7.8
HIGHCVSS 3.0
EPSS 0.47%
Description
CloudForms Management Engine (cfme) is vulnerable to an improper security setting in the dRuby component of CloudForms. An attacker with access to an unprivileged local shell could use this flaw to execute commands as a high privileged user.
Affected products
- Vendor n/a Product Cfme Defaultn/a
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| n/a | Cfme | n/a |
|
- 4.5
- 4.6
- 5.8
- 5.9
No data.
CloudForms Management Engine 5.8
ansible-tower-0:3.1.8-1.el7at
Fixed · RHSA-2018:2745
CloudForms Management Engine 5.8
cfme-0:5.8.5.1-1.el7cf
Fixed · RHSA-2018:2745
CloudForms Management Engine 5.8
cfme-appliance-0:5.8.5.1-1.el7cf
Fixed · RHSA-2018:2745
CloudForms Management Engine 5.8
cfme-gemset-0:5.8.5.1-1.el7cf
Fixed · RHSA-2018:2745
CloudForms Management Engine 5.8
rh-postgresql95-postgresql-pglogical-0:1.2.1-2.el7cf
Fixed · RHSA-2018:2745
CloudForms Management Engine 5.9
cfme-0:5.9.4.7-1.el7cf
Fixed · RHSA-2018:2561
CloudForms Management Engine 5.9
cfme-amazon-smartstate-0:5.9.4.7-1.el7cf
Fixed · RHSA-2018:2561
CloudForms Management Engine 5.9
cfme-appliance-0:5.9.4.7-1.el7cf
Fixed · RHSA-2018:2561
CloudForms Management Engine 5.9
cfme-gemset-0:5.9.4.7-1.el7cf
Fixed · RHSA-2018:2561
CloudForms Management Engine 5.9
rh-postgresql95-postgresql-pglogical-0:2.1.0-4.el7cf
Fixed · RHSA-2018:2561
CloudForms Management Engine 5.9
rh-ruby23-rubygem-redhat_access_cfme-0:2.0.3-1.el7cf
Fixed · RHSA-2018:2561
| Product | Package | State | Advisory |
|---|---|---|---|
| CloudForms Management Engine 5.8 | ansible-tower-0:3.1.8-1.el7at | Fixed | RHSA-2018:2745 |
| CloudForms Management Engine 5.8 | cfme-0:5.8.5.1-1.el7cf | Fixed | RHSA-2018:2745 |
| CloudForms Management Engine 5.8 | cfme-appliance-0:5.8.5.1-1.el7cf | Fixed | RHSA-2018:2745 |
| CloudForms Management Engine 5.8 | cfme-gemset-0:5.8.5.1-1.el7cf | Fixed | RHSA-2018:2745 |
| CloudForms Management Engine 5.8 | rh-postgresql95-postgresql-pglogical-0:1.2.1-2.el7cf | Fixed | RHSA-2018:2745 |
| CloudForms Management Engine 5.9 | cfme-0:5.9.4.7-1.el7cf | Fixed | RHSA-2018:2561 |
| CloudForms Management Engine 5.9 | cfme-amazon-smartstate-0:5.9.4.7-1.el7cf | Fixed | RHSA-2018:2561 |
| CloudForms Management Engine 5.9 | cfme-appliance-0:5.9.4.7-1.el7cf | Fixed | RHSA-2018:2561 |
| CloudForms Management Engine 5.9 | cfme-gemset-0:5.9.4.7-1.el7cf | Fixed | RHSA-2018:2561 |
| CloudForms Management Engine 5.9 | rh-postgresql95-postgresql-pglogical-0:2.1.0-4.el7cf | Fixed | RHSA-2018:2561 |
| CloudForms Management Engine 5.9 | rh-ruby23-rubygem-redhat_access_cfme-0:2.0.3-1.el7cf | Fixed | RHSA-2018:2561 |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Administrators of the CloudForms appliance can filter local packages going to the port where MIQ Server is listening, by using the following iptables command: # iptables -I OUTPUT 1 -o lo -d localhost/32 -p tcp -m tcp --dport <MIQ Server port> -m owner '!' --uid-owner root -j DROP Where the MIQ Server port can be found using netstat command: # netstat -nl --tcp -p | grep -i "miq server"
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.47% (0.00474) | 38.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.47% (0.00474) | 37.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.13% (0.00129) | 29.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00054) | 23.75th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.05% (0.00054) | 21.58th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.05% (0.00054) | 19.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.46% (0.01458) | 32.87th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.46% (0.01458) | 0.00th | v1 |
References (7)
- https://access.redhat.com/errata/RHSA-2018:2561 vendor-advisoryx_refsource_REDHATVendor Advisory
- https://access.redhat.com/errata/RHSA-2018:2745 vendor-advisoryx_refsource_REDHATVendor Advisory
- https://access.redhat.com/security/cve/CVE-2018-10905 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1602190 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10905 x_refsource_CONFIRMIssue TrackingMitigationVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-10905
- https://www.cve.org/CVERecord?id=CVE-2018-10905
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2018:2561 | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| https://access.redhat.com/errata/RHSA-2018:2745 | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-10905 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1602190 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10905 | x_refsource_CONFIRMIssue TrackingMitigationVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-10905 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-10905 |
Change history (0)
No recorded changes yet.